This video goes over how to install and use the EFIE device. This is a reasonable approach to help obtain a richer air fuel ratio with any air and or exhaust mods. This should not take the place of any ECU flash for heavy mods. This device only tricks the ECU to richen up the Air/fuel mixture. It does not do any timing adjustments.
You can find this from the link below.
eagle-research.com/product/el...
Start here to read more about this.
www.hondagrom.net/threads/o2-...